Calender



m.- 2, 1923. www

Sube/mbox.. JOHN A. Mc CnoHAN,

- u @i om v Patented Oct. Z, 1923.

JOE-N A..MCCROHAN, F NEW HAVEN, CONNECTICUT, ASSIGNOR T0 L. CANDEE & COM-4 PANY, 0F NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

CALENDER.

. l l Application filed November 3,l 1922. Serial No. 598,704.

To all whom t may con/cem:

.Be it known that I, JOHN A.l MCCROHAN, a citizen of the United States, residing at New Haven, county of New Haven, and Stateof Connecticut, have invented a 'cer- 'tain new and useful Calender, of which the following is a full, clear, and exact description.

' This invention relates to a calender, more 10 particularly, to an engraved roll calender.

In the operation of engraved rollv calenders, when it is desired to impress the stock being calendered with a different design, it

is necessary to stop the operation of the calender while the engraved roll is` being removed and another substituted. The calenders are ordinarily rather large and the rolls `quitel heavy, while the space in which to operate is usually rather cramped, and as a result, considerable time is taken in making the change. The present invention is an improvement on the calender shown in patent to Clark No. 1,226,949 of May 22, 1917, and

in the embodiment of the invention shown it is applied to a calender for making sole stock -for rubber overshoes, etc., but it is not however limited in its application to such a calender. In calendering such sole stock it is usually-formed with spaced roughened portions corresponding .to the heel and `ball portion of the sole with an intermediate smooth portion corresponding to the' shank on which latter is disposed the brand and any other desired indicia. In larger footwear factories a number of brands of shoes are usually manufactured and in the course of adays run it becomes necessary to change the engraved roll each time a different brand of sole stock is run. The time occupied in changing a roll amounts to ten minutes or more and it is readily seen that if the vroll must be -changed a dozen or more times during the day, a large amount of time is taken duringv which valuable equipment and expensive f labor are idle.

An object ofmy invention is to provide an improved engraved roll calender having an increased capacity.

Another object is to provide a continuously operable changeable roll calender.

- Still another object is to rovide a calender in which .the rolls .may e changed with greater facility.

`ltion, reference is had to the accompanying Ader roll;

.of the screws 6, the roll 5 ma be adjusted into any desired proximity to t e roll 4, and

For a detailed description ot the inven` I specification and drawings in which latter Figure 1 is a front elevation. of my improved calender;

I Figure 2 is a right-hand velevation of the samewith parts omitted;

Figure 3` is a left-hand elevation;

Figure 4 is a detail of a'engraved calen- Figure 5 is a detailv with parts omitted of 6I! a pivoted drive chain bracket; and f.

Figure 6 is a slide elevation of the bracket.

'Referring to the drawings, the numeral 1 l designates the base ofthemachine having the upright-side frames 2 .and-3. Mounted in the upper part 'of the side frames are coacting calendering rolls 4 and-5, the roll 4, having xed journals and the roll 5 having itsf'journals adjustable in the frames 2 .and 3 by means of the adjusting screws 6 threaded through the caps 7, which latter are bolted tothe frames 2 and 3 in a manner similar to that shown in patent. to Clark before mentioned. V,It will be seen that by actuation the longitudinal relation of the rolls may also be varied, that is, the rolls may be spaced more closely at one side than at the other, so as to produce a calendered sheet of greater thickness at one edge than at the other. Below the ro'lls 4-and 5a second pair of rolls 8 and 9' are mounted in the frames 2 and 3 ina` similar manner, the roll 8 being fixed while the roll'9 is adjusted by means of the screws 10 threaded in the caps 11. Below the rolls 8 and 9 is aA roll 12 fxedly mounted in the side frames 2 and 3, and adapted to cooperate with the roll 12 on each side thereof, are engraved rolls 13 and 14.. Each ofthese engraved rolls is mounted in the same manner in the frames 2`and 3 and a description of one will therefore suice. The roll. 1-3 is carried in split bearings T15 movable in recesses in the frames2 and each bea-ring 100 having a handle 16 projectingf'therefrom,

against which bears :1n-adjusting screw 47.4-

threaded through a cap 18. Tle' caps 18iare not mounted in the same manners-eaps-'- :W

and 11 but are hngedly connected to the 105 respective frames 2 vand 3 at 19., A bolt projecting from each frame passes through the upper slotted end of .a corresponding cap 18 and the cap is held inclosed position by a nut 21.- TWhen it 1s desired to V remove 'the roll 13 or 14 thenuts 21 are unscrewed and the caps 18 allowed todrop to a horizontal position, in which position they are held by the stop shoulder 22 of each cap engaging a corresponding shoulder 23 on the frame. zontally disposed -caps form a support or table on which the bearings 15 and roll 13 maybe slid when it is desired to remove the roll. .l

At the end of the sha-ft 24 of the roll 8` which projects through the frame 3 amain drive sprocket 25 is mounted on whlch 1s Adisposed .a drive chain 26 connected to any suitable source of power. Also mountedpon the same end of the shaft 24 is a second s procket 27, which through .the chain 28 drives' the sprocket 29 on the shaft of roll 5, the chain also passing over the idler sprockets 31 and 32carried on frame 3. It

vwill be Seen that by this construction the roll sprocket 41 secured to the frame 2. .Adjacent the sprocket 27 a sprocket 42 is secured on the shaft 24 of roll 8 and this sprocket byA means of chain 43 drives a sprocket carried by the clutch member 44,- which latter is loosely mounted on the shaft 45 of roll 12 (Figs. 1 and 2). A sprocket 46 is mounted on the shaft 36 of roll 9 and by means of Vchain 47 drives a sprocket carried by a second clutch member 48, also loosely mounted on the shaft'45, the chain 47 also passing over an idler sprocket 49 carried bythe frame 3. A clutch member1 50 is slidably keyed on the shaft 45 between the clutch members 44 and 48 and may be moved into driving relation witheither of them by l on a short shaft., having at its other-end a veo meansof the operating lever 51 fulcrumed at 52 on the frame. The lower end of lever 51 is pinned to screw block 53 carried by the threaded end ofy a shaft 54, the other end.

of the shaft having a gear 55 meshing with a gear 56, which latter in turn is mounted gear 57, meshing with gear 58 on shaft 59.

'The shaft 59 is connected at each end by universal joints? 60 with the angularly disposed shafts 61 having the hand wheels 62 .disposed at opposite sides of the machine. The shaft 63 of engraved roll 13 carries at its end adjacent the frame 2 a sprocket 64,

1t will thus be seen that the horirecense and in a similar manner the shaft 65 of roll 14 carries a sprocket 66. Secured 'to the frame 2 is a bracket plate 67 having pro,

jectingthereform a bearing sleeve 68 slightly spaced from the shaft 45 of roll 12, and pivotally mounted on this sleeve is a rocking chain carrying bracket 69 ('Figs. 3, 5

and 6). Mounted on opposite ends of the direction depending on whether it is con` nected in'driving relation to the roll 8 or 9 by the'manipulation of the hand wheels 62. It will also be seen that by reasonof the connection of the chain bracket 69 with the worm 75, the chain y72 will be operatively connected to either the sprocket 64 or the sprocket 66, depending on t-heY direction in which the hand wheels 62 arel rotated. ln

vorder to prevent too great a pivotal move- .ment of the bracket 69 with consequent excessive tension on the chain 72, the bracket is provided with the stop shoulders76 which are adapted to engage one or the other of the adjustable stop screws 77 carried by the bracket plate 67.

Between-the upper two pairs of calender rolls a tension' roll 78 is disposed and between the middle pair and lower rolls a second tension roll 79 is disposed. presser barj80 is disposed between the rolls 8 and 9 in order to provide pressure on the stock and to facilitate feeding the same,l and similar presser bars 81fnnd 82 'are disposed between the roll 12 and the respective engraved rolls 13 and 14.

' 1n Figures 1 and 4 is shown a common form of engraved roll in-use for calendering sole stock. ln this roll there is provided a roughenedportion. 83 integral with the roll,` an lntermediate removable ring 84 provided with brand designations 85 or other indicia as shown in Figure 1, and a'second f roughened portion which is carried by a re'- movable ring 86. rlhe rings 84 and 86 are keyed to the shaft ofthe roll and are held Ain position Vby a threaded. lock nut 87. ln the calendered stock that part' formed by the roughened portion 83 corresponds to the ball part of a sole, the. smooth part formed by the ring 84 corresponds to the shank of the sole, whilethe part formed by the roughened portion of ring 86 corresponds to' lthe heel of the sole. It will be seen that inl addition to the time taken in removing such a roll from the calender additional time is required to change the -ring carrying the brand mark 85. l

in operation thestock 88 is let down between the upper pair of rolls 4 and 5, then around the tension roll 78, through the bank of stock formed by the rolls 8. and 9, and in the instance shown by adot andv dash line -in Figure 3 is then led around the lefthandside of the tension roll 7 9 and down through the bank formed b y the roll 12 comes necessary to change to another brand,

esc'A has been devised, which can be o and engraved roll 14, the finished stock passing under the roll 14 and up onto the conveyor 89. When the machine is operating in this manner the roll 12 is driven in a clockwise direction (Fig. 3) from the roll 8, the clutch member 50 being at this time connected to the clutch member 44, as shown in'Fig. 1. At the same time, by reason of the movement of worm 7 5, the chain bracket 69 has been moved to the right (Fig. 3) to place the engraved roll 14 in driving relation with the sprocket 7 3 on roll 12. When the desired batch of stock has been run having one brand impressed thereon and itbethe machine is run very slowly, the stock -25 cut above tension roll 79 and the hand wheel 62 operated to release the clutch member 50 from clutch member 44 and engage it with clutch member 48, thereby reversing the direction of roll 12 and driving it in a counter clockwise direction. At the same time the movement of the worm 75 shifts.

thev chain carrying bracket 69 to free the roll -14 from driving relationl with roll 12 and engage roll 13 instead. The cut stock end is then pulled over to the right-hand side of tension roll-79,led down between the rolls'12 and F13, up over the idler roll 90, under the idler roll 91 and onto the second conveyor 92 in the manner shown by dash lines in Figure 3.

After shifting to place the engraved roll 13 in operation, the roll 14 may then be removed at leisure without in any way inf -terering with the operation of the Galender. As before pointed out the caps 18 are unbolted and swungdown into their horizontal position as shownA in Figure 2, the handles 16 of journals 15 grasped and the roll 14 drawn out onto the caps 18 where it may be readily lifted by an overhead crane or in any other manner and another roll having a di'erent brand marked thereon substituted. The handles 16 form a cnvenientmeans for withdrawing the journals and the roll and also prevent burning of the hands of the operator by reason of heated journals. l

lt will be seen that by my invention. an engraved roll calender of vgreater capacity rated continuously for calendering di erently impressed stocks, and in which the engraved roll can be removed with greater facility when it is desired to change the same.

While a specific embodiment ci the invention has been shown and described, it

Iis obvious that numerous changes may be tain of said rolls into and out of connection with said drive means. l

2. In a calendering machine, a-series of adjacent calenderrolls, drive means therefor, and means for selectively connecting any two adjoining rolls to said drive means.

3. lna calenderi-ng machine, a series of adjacent calender rolls, drive means therefor, and means for .selectively connecting any two adjoining rolls to said drive means While maintaining the direction of feed through the rolls constant.

4. In a calendering Imachine, a plurality ofjcalender rolls including means Jfor immachine, a pluralityf pressing a predetermined design on. the

stock passing therethrough, and means for varying'saiddesign without stopping the machine. v

5. ln a .calendering machine, a calender roll, a pair of calenderrolls ad'acent thereto, drive means for said first rol and means for alternatively connecting each of said pair ofrolls with said drive means.

6. In a calendering machine, a calender roll, a pair of calender rolls adjacent thereto, reversible drive means for said first roll,

and means -for alter-natively connecting each of said pair of rolls to said drive means and simultaneously lreversing said first roll.

7. n a calendering machine, -a calender roll, apair of removable calender rolls ad,- jacent thereto, reversible drive means for said first roll, and means whereby either of said pair of rolls may be driven from the irst 'roll while' -the other is being removed and exchanged.'A

roe

8. In Ia calendering machine, a pair of connected to said first pair of rollsqor at will driving said third roll in either direction and either of said engraved rolls' in cooperating relation therewith. l

10. lin `a calendering machine, a pair. of cooperating calenderl rolls, a third roll, means for. driving said .third lroll 'from either of said pair, a pair ofengraved rolls- Las@ Lroll from either of said pair, a pair of en-v graved rolls coperating withsaid third roll,

- a floating chain 'drive 'mechanism actuated from said third roll, and means actuated in unison with said clutch mechanism for operativelj,7 connecting said chain drive mechanism to either of said engraved rolls..

12. ln a calendering machine, a reversibly driven calender roll, a pair of engraved rolls adjacent thereto, means for driving either of said engraved rolls, governing means operable from different points on the machine, and mea-ns connected to said governing means for reversing the'direction of said rst roll and connecting one of said engraved rolls to said driving means.

able calender roll, means for retaining in operative position, and means whereby said last means may Aloe horizontally disposed to receive the roll in removing the latter.

14C.l ln a ca-lendering machine, a frame, a removable calender roll mounted therein, hinged retaining plates .having threadedly connected thereto adjusting screws for holdingthe roll in position, means for holding the plates in closed position, and stop means for holding the plates horizontally when in open position.

bis

15. lln a calendering machine, a frame, a

journal movable `therein and having a handle, aoalender roll carried by said journal, a retaining plate'secured to said frame, and an adjusting screw threaded in said plate and' engagealole with said handle.

Signed at New Haven, county of New Haven, and State of Connecticut, this 31st day of @ctober,1922.

tor-tnv n. raccnonan. 

